变电站用直流电源系统直流充电机电气闭锁方式研究

Research on Electrical Locking Mode of DC Charger in Substation DC Power Supply System

变电站直流电源系统直流充电机在运行过程中要妥善管理电气闭锁功能,并且在电气闭锁功能的支持下稳定运行。直流充电机电气闭锁方式具备“五防”功能,能够防止断路器误分、误合,防止带负荷分合隔离开关,防止带电接地,防止带接地线闭合隔离开关,防止误入带电区域。变电站的直流充电机电气闭锁会出现一些问题,需要对这些问题进行分析和处理,确保系统运行的安全、稳定、高效。

The DC charger of substation DC power supply system should properly manage the electrical locking function in the operation process,and operate stably under the support of the electrical locking function.The electrical locking mode of DC charger has the function of“fi ve prevention”,which can prevent the circuit breaker from opening and closing by mistake,the disconnecting switch with load,the live grounding,the closing disconnector with grounding wire,and the entry into the charged area by mistake.There are some problems in the electrical locking of DC charger in substation,which need to be analyzed and treated to ensure the safety,stability and effi ciency of the system operation.